fix build

Author: RalfJung

rust-src.diff

@@ -0,0 +1,12 @@
+diff --git a/library/core/tests/lib.rs b/library/core/tests/lib.rs
+index 3947a64e5c6..ccb7be68eb1 100644
+--- a/library/core/tests/lib.rs
++++ b/library/core/tests/lib.rs
+@@ -67,6 +67,7 @@
+ #![feature(slice_internals)]
+ #![feature(slice_partition_dedup)]
+ #![feature(ip)]
++#![feature(ip_in_core)]
+ #![feature(iter_advance_by)]
+ #![feature(iter_array_chunks)]
+ #![feature(iter_collect_into)]

rust-version

@@ -1 +1 @@
-nightly-2023-01-13
+nightly-2023-02-28